Improvement in saw-gummers



tmtd .iS/tetra A.YR. SILVER, OF SALEM, OHIO, ASSIGNOR TO HIMSELF AND JOI-IN' DEMING, or SAME PLACE. Letto/rs Patent No. 84,514, dated December l, 1868.

IMPROVEMENT 1N s AW-GUMMERS.

*MoH- The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that Iz A.V R. SILVER, of Salem, in the county of Columbiana, and State of Ohio, have invented a new and useful Improvement in Die-Holders for Saw- Gummers; and I lio-hereby declare that the following ,is a full, clear, and exact description thereof, reference being had to theaccompanying drawings, makinga partof this speciication, in which- Figm'e 1 is an elevation of one side of a saw-gum.-

.mer, constructed with my improved die-holder.

ing'bars or slides, as shown in Letters Patent granted to L. A. Dole, September 9, 1856. n

The nature of my invention consists in -the formation of a die-holding head upon one end of a slidingk bar, with a tapering socket in that portion of the head which overhangsa female die, adapted for receiving and iirmly retaining in place a tapering die for gum ming saws, said head being so formed as to admit of the use of metal which will afford all the strength required to resist the strain upon it in the operation of gumming, as vwill be hereinafter explained.

To enable others skilled in the art to understand my' invention, I will describe its construction and operation.

In the accompanying drawings, A represents the frame or bed of a 4saw-gummer, adapted for receiving and supporting the devices required in the operation of gumming saws.

B is 'a bar, which is received in said frame, and held ,in place by a back plate, H, and which ,receives vertical-reciprocating movements ii'om an eccentric head, J, on the end of a lever, I. This bar is pivoted at b to lever I, whose eccentric head, J, is moved between hoiizontal faces c c of frame A, as shown in iig. 2.

The horizontal table of frameiA,upon which the female die G is supported, is constructed with a dovetail recess, to receive and firmly hold down in place said die G, and also with an oiiset, h, which is perforated to receive a pin,l. v v

Between the attened head of this-pind and the end of the female die, a wedge, y, Vis driven, which keeps this die in place beneath theV male die F, and over a chip-hole, S. v

Having described one form of machine to which my invention is applicable, I will Ynow describe the improved mode of constructing the head for holding the male die.-

To the upper end of the vertically-sliding bar B, a'

piece of metal is welded, and so shaped,.by bending and hammering, as to form upon thisbar an enlarged head, D,'having a long tapering socket, c, on that por tion of the head which is over the opening'a, through the female die, as clearly shown in iig. 2. Such socket isV made with reference to the size and tapering form of the shank of the male die F, so that the die will be firmly held therein, without any other fastening than is afforded by the friction of a long bearing, after the die-shank is driven into its place.

The socket extends vertically through the head D,l and dares downward, as shown, so that, by driving the female die out a short distance, and striking with a -hammer upon the male die, this latter die can betaken out throughv the chip-hole S.

A die-holding head, thus formed upon the bar B, will aiord a long and substantial bearing, which Will hold the male die rigidly in place under heavy pressure, and also'allow of a ready removal of the die when required.

NVhat I claim as my invention, and desire to secure by Letters Patent, is-

The saw-gummer bar B, herein described, constructed with the head1), in which is a die-socket, e.

Witnesses: A. R. SILVER.

E. W. FAWCETT, N. A. MORLAN.' 

